How to limit the number of dropzone.js files uploaded?

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I achieved this a slightly different way. I just remove the old dropped file any time a new file is added. It acts as overwriting the file which was the user experience I was going for here.

Dropzone.options.myAwesomeDropzone = {
  accept: function(file, done) {
    console.log("uploaded");
    done();
  },
  init: function() {
    this.on("addedfile", function() {
      if (this.files[1]!=null){
        this.removeFile(this.files[0]);
      }
    });
  }
};

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